Storage controller and bus control method for use therewith

Details Storage controller and bus control method for use therewith Storage controller and bus control method for use therewith

1995-01-31

1997-06-17

Harvey, Jack B.

395825, 395826, 395835, 395849, 395834, 395854, 395287, 395292, 395750, 395444, 395445, 395438, 395440, 395494, 39549701, 395308, 395306, H01J 300

Patent

active

056406002

ABSTRACT:
A storage controller comprising a storage device adapter, a channel adapter, a cache memory, a control memory, and a plurality of buses connecting therebetween. The channel adapter communicates with a processor and processes input/output requests issued by the processor. The storage device adapter controls a storage device and data transfer between the storage device and the cache memory. The channel adapter and the storage device adapter exchanges control information via the control memory. The buses are used to transfer the data and the control information between the cache memory and the control memory, and the channel adapter and the storage device adapter. The controller also comprises bus load estimating means and bus mode selecting means. The bus load estimating means estimates bus load characteristics as an index based on the amount of data transfer during sequential access to the storage device. The bus mode selecting means determines a bus mode of bus utilization based on the index. Each of the channel adapter and the storage device adapter has bus access means for accessing the buses in accordance with the bus mode selected by the bus mode selecting means.

REFERENCES:
patent: 4633387 (1986-12-01), Hartung et al.
patent: 5003465 (1991-03-01), Chisholm et al.
patent: 5097410 (1992-03-01), Hester et al.
patent: 5135563 (1992-08-01), Tayler et al.
patent: 5155807 (1992-10-01), Blevins et al.
patent: 5241677 (1993-08-01), Naganuma et al.
patent: 5253351 (1993-10-01), Yamamoto et al.
patent: 5280587 (1994-01-01), Shimodaira et al.
patent: 5450584 (1995-09-01), Sekiguchi et al.

Affiliated with

Also associated with

Rating

Storage controller and bus control method for use therewith does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Storage controller and bus control method for use therewith, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Storage controller and bus control method for use therewith will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2166462